Water-cooled shield for tank-furnaces



J. M. SAID.

WATER CDOLED SHIELD FOR TANK FURNACES.

Patented NOV. 30, 1920.

2 SHEETS-SHEET 1.

APPLICATION FILED JAN-2| I920.

YIIlI/III/M W014 JesseM Send \I,

INVENTOR J, M. SAID. WATER COOLED'SHIELD FOR TANK FURNACES.

APPLICATION FILED JAN. 2, 1920..

Patented Nov. 30, 1920.

2 SHEETS-SHEET 2.

& H xmrx $1 xxww l 7 R A 2 a 1 u N .w M 5 m 1 6 Y M B k A E F AYTTORNE UNITED STATES PATENT oFF ce,

JESSE 7M. SAID, on CORNING, NEW YORK, ASSIGNOR To conumo'enass woRKs. or

"conume, NEW YORK, A oonroan'rrou on NEW YORK.

WATER-00011131) I'EQIELD FOR TANK-FURNACES.

Application filed January 2, 1920. Serial No. 349,109.

To all whom it may concern Be it known that I, Jesse M. SAID, a citizen of the United States of America, and a resident of Corning, county of Steuben, State of New York, have invented certain new and useful Improvements in VVater- Cooled Shields for Tank-Furnaces, of which the following is a specification. p

This invention relates to a water-cooled shield for tank furnaces.

Glass tank furnaces are usually provided with a series of boot-openings, arranged in the curtain walls of the furnace, at intervals, for the purpose of'gathering molten glass therefrom. These openings are usually made from two to three feet highand. about two feet'wide, for the purpose of inserting and removing the boots from the tank.

It has been the practice heretofore to provide the boot-openings with shields for the protection of the gatherer, the shields commonly used consisting of plates ofsheet-iron so placed in front of the boot-opening that an opening is left largeenough to permit the insertion of the gathering iron into the tank and its withdrawal with a gather thereon.

The sheet-iron shields quickly become so heated that the radiation therefrom is sufficiently great to render it difiicult for the men to continuously gather from the openings. I have discovered that by placing a wire screen carrying a water film in front of the sheet-metal shield, the heatradiated by the sheet-metal shield is absorbed and the men protected. 4

In the exemplification of my inventionto be hereinafter fully described and claimed, I

have shown a form of device which has been thoroughly tested in a glass factory manufacturing articles from glass requiring a very high temperature, viz, 2500 to 3000.

F., to place it in a workable condition. Due to this high temperature, the workmen had found it difficult to make gathers from the tanks for any length. of time, as the heat transmitted through the boot-openin was such that they were soon overcome. owever, with my apparatus in place, the work men are not at all affected, and, in fact, no

appreciable amount of heat is transmitted to the outside of the screen.

In the accompanying drawings,

Figure 1, illustrates a View of a glass tank furnace boot-opening with a shield embodying my invention in operative position, and

"the boot-opening on three sides.

Specification of Letters Patent. Patented NO 30 192a Figs. '2, .3, at, 5 and 6, are detail sections taken on the lines 2-2, 3-3, 4 5-5 and 6-6,' respectively, of Fig. 1.-

' In the drawings, the boot-opening in the curtain wall, 1, is closed by sheetmetal, plate, 3, having its two opposite vertical edges bent outwardly, as shown at 4... The. size of the plate, 3, is such that it overlaps Suitably secured to the upper edge of the plate is a normally horizontal water-pipe, 5, having a series of perforations, 6, which extend suh stantially the entire length thereof, and are for the purpose of directing a stream of water in the formof a fine spray outwardly and at nearly right angles to the shield, 3. Encircling the water-pipe, 5, is a hood, "I, in the form of aninverted -J having an innor curved edge, 7, fastened-to the top of the plate, 3. The front of the hood, 1?, eX-

tends downwardly and. inwardly toward the plate, 3, and terminates a suitable distance from such plate, so that a gap, preferably sayofoneinch, is left between the lower edge of the hood and the front face of the plate. I f

Positioned in front of the plate, 3, is a screen, 8, of wire netting of free mesh, which 18 of an area corresponding approximately to'the area of the plate, 3. The screen, 8, at

its top, is bent slightly inward and is secured to the plate, 3, between the inner edge of of screening, 9, rests against the outer edge of the hood, 7 and extends down alongthe outer face of the screen, 8, having its lower edge secured to the latter by means of the wire loops, 10. Except where thescreen, 8, has its upper edge secured tothe p1ate,3, it is spaced therefrom.

The plate, 3, is shown as provided with two openings, 11, and, 12, the former being form troughs, the purpose of which will the hood and the plate. A horizontal strip be hereinafter more fully described. The screen, 8, is secured to the edges,13, and plates, 15.

For the purpose of enabling a workman to carry the apparatus, 1 prov1de the handies, 16, which are secured to the plate 3,

by means of bolts, 17. To keep the screen spaced from the plate, 3,'where the handles are secured to the latter by the bolts, 17, are the nuts, 18, which are interposed between the screen and the plate. Thus, the bolts, 17, serve the purpose as securingmeans tor the outer edges of thescreen, as well as securing means for the handles, 16.

(hen the apparatus is set up in position in front of the boot opening of a furnace, the pipe, 5, is connected to a water supply line and water under pressure admitted thereto. The water passes through the opening, 6, of the pipe, 5, in form of spray which strikes the hood, 7, and is deflected thereby downwardly against the screen, 8. t then trickles down the screen, 8, forming a water lilm thereon. As the screen is spaced from the plate, 3, in its entirety, the water does not strike the plate in its passage down the screen. What water passes down the screen above the openings, 11, and, 12, is deflected by the troughs, 15, and, 13, as will be understood. As the heat is more intense around these openings, it will be apparent that the water collected by the troughs will tend to reduce this heat somewhat.

In actual practice, while the temperature within the boot-openings is about 3-000v degrees F, the temperature of the water is increased very little on its passage down the screen. In fact, the screen can he touched by the hand at any place onits area, and it is cold to the touch. Should the screen, 8, be removed, however, and the water allowed to flow down the surface of the'plate, 3, it at once turns to steam and is evaporated. I, therefore, believe that the success of my apparatus lies in the fact that thescreen is spaced from the plate, and the volume of water passing downwardly thereover is kept from contact with the plate, although the heat radiated by the plate is absorbed by. the curtain of water which I have provided. i

What I claim, and desire to secure by Letters Patent is l. in combination with a bootnpening of a tank, of means for intercepting heat radiation therefrom, comprising a film netting screen positioned in front of said bootopening, and carrying a water film. V

2. Means for cooling a boot-opening of a tank, comprising a plate partially closing said opening, and a screen spaced in front of said plate and carrying a water film.

Means for cooling :1. lzoot-opening of a tank, comprising a plate partially closing said opening, a screen in front of said plate and carrying a water film, and means for spacing said screen from said plate.

l. Means for cooling a boot-opening of,

a tank, comprising a plate partially closing said opening, a screen in front of said plate and carryingv a water film, and means for spacing said screen from said plate, said spacing means forming a part of manipulating handles. In testimony whereof I hereunto name this 30 day of Dec, 1919. a

JESSE M. SAID.

sign my 

